Brick-plastering machine



` (No Model.)

R. E. HUNN. BRICK PLASTBRING MACHINE.

Wifnesses.

UNITED STATES PATENT Finca.,

ROBERT E. HUNN, OF CHICAGO, ILLINOIS.

BRICK-PLASTERING MACHINE.

SPECIFICATION forming part of Letters Patent No. 370,061, dated September 20, 1887.

Application illed March 19, 1887. Serial No. 231,593. (No model.)

To @ZZ whom it may concern:

Be it known that I, ROBERT E. HUNN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a Machine for Spreading Mortar 0n Bricks to be Used in Making Walls, of which the following is a specification.

My invention relates to a mechanism for spreading the mortar on bricks preparatory to laying them in walls, and has for its object to provide a device whereby the mortar can be conveniently and evenly applied to the surface of the brick. This object I accomplish by means of the mechanism illustrated in the accompanying drawings, wherein- Figure l is a plan view of my device with certain parts broken away. Fig. 2 is a section through the line Z Z. Fig. 3 is an end view.

Like parts are indicated by the same letter in all the figures.

A A are side frame-pieces, having each at its lower edge a portion, B B, cut away. These side pieces are secured to the framepieces C C, and are connected at each end by the end cross-pieces, D D, and the curved metallic plates E E. The side pieces, C C, are bent over at their sides, and to them are hinged the legs F F by the bolts G G. The bottom of the machine is downwardly bent, as at H, and connected with the side pieces, C C, and supported thereon.

Secured to theside pieces, at the ends thereof, are the pins .I J, which prevent the hinged legs from spreading too far when they are opened outward to support the frame. Each of these side pieces is provided on its inner surface with a groove composed of the parts, as shown, and numbered K, K', K2, K3, K4, K5, Ks, K7, K8, K, K10, and K, shaped as shown, and having at each end the spring-switch L L5. At the ends of the machine is secured the mortarreceptacle M and M in anyconvenient manner. Within the body of the device is a transverse sliding board, N, on which rises the stan dard O, in the center thereof. This standard bears the pin P at its upper end, which pin passes through a slot, Q, in the hanger R of the central plate, S, of the trowel. This central plate has hinged to it at its ends the spreading-points T T', curved at their outer Secured at each side to the plate N is a ends.

rack, U. These racks slide on the side pieces, C C, of the frame, and the slide-board N passes across the frame from side to side, underneath the side pieces, and reciprocates in the cut-out portion B at the bottom of the side pieces.

Y V are pinions journaled about midway of the side pieces of the frame and adapted to engage the racks U U and also the racks W W on the sliding frame X. This sliding frame has the gnide-plates Y Y thereon and the pins Y', whereby the brick may be placed ou such sliding frame and held securely in position during the operation of the machinery.

I. Lz are transverse pins on the ends of the trowel-points T T', which are adapted to slide in 4the grooves, and when moved past the spring L L5 will switch thctrowcl into the upper portion of the groove.

At the point where the plate S is hinged to the points T T are similar transverse pins, L3 L, which also travel in the grooves and cause the trowel to change its angle from time to time, as hereinafter explained.

The use and operation of my invention are as follows: My invention is designed to be used 'by briclolayers, and is especially adapted for use in buildings Where first-class work is required, and where it is desired to have the mortar on the bricks evenly and accurately laid. The machine, set up as shown in the drawings, is placed in a suitable position, and is moved about with the progress of the work. The mortar-receptacles at the ends are furnished with a suitable quantity of mortar, which passes down into the frame and on the curved metallic sheets E, same as shown in the dotted lines in Fig. 2. Assuming that the parts are as shown in the drawings,iorin both Figs. l and 2 they are shown in the same positions, the operator places the brick upon the sliding frame X, the brick resting upon the pins Y and against the guides Y, so as to be brought properly into psition. In this manner the entire lower surface of the brick is eX- posed, except a very small portion thereof, which rests upon the pins. The brick, together with the sliding frame, is now pushed in the direction ofthe arrows. The racks W NV on the sides of this frame,engaging the pinions V, cause them to turn as the slide-frame and brick proceed in their course. At the IOO same time the revolution of the pinions V causes the racks U to move in the opposite direction, and since these racks are secured to the plate N, and the plate N by its standard and pin is attached to the trowel composed of the portions S and T T, the said trowel is moved in a directionopposite from that in which the brick is being pushed. It will be observed the pin L on the point T has just passed and is above the spring-switch L, so

that as the trowel travels in a direction opposite to that ot' the arrows the transverse pin L will travel in the groove K, thus bringing its load of mortar against the bottom of the brick on the sliding frame. As the motion proceeds, the pin L'd passes up the incline K3, thus straightening out the parts S and T of the trowel, so as to cause them to pass along the bottom of the brick in a plane parallel therewith, except asto the end of the point T, which accurately spreads the mortar over the brick. At the end of the stroke it will b e found that the trowel occupies the same relative position in the opposite end of the machine. The 'second brick is then placed in position, the motion is reversed,` and the operation is repeated. By means of this machine it will be found that the. mortar is very conveniently and accurately spread over the bottom of the-brick, and it may then be placed in position on the wall. The slot Q permits the necessary vertical motion of the part S Of the trowel. The legs F are folded down, and when it is desired to transport the machine they may be folded up, as indicated in dotted lines. The shape ofthe bottom H permits what mortar may pass out of the machine to drop therein, where it can be easily'refnioved by means of a shovel and returned to the hopper or mortar-receptacle.,` The passage K forms an 'entrance tothe system of grooves, whereby the trowel may be removed, if desired..

I claim-,-

l. In a machine for applying plaster to brick, vthe combination ofa lframe provided with brick-supports and a trowel which travels on such frame below said brick-supports, so as to spread theA mortar on the bottom of the brick'.

2. In a` machine for applying plaster to brick, the combination of a frame, a movable 'brick-support thereon, and a trowel along which the brick-support travels, so that the trowel applies the mortar to one side of the brick.

3.- In a machine for applying plaster to brick, the combination of a frame, a movable .brick-support thereon, and a movable trowel thereon, the support and trowel adapted to move along each other in opposite directions.

4. In a machine for applying plaster to brick, a frame, in combination with a trowel consisting of yhinged sections and grooved supporting-pieces in which the sections slide, so that the trowel passes along the brick, its

sections from time to timechanging theirangles to each other.

5. In a machine for applying plaster to brick, a trowel composed of hinged sections and transverse rods, in combination with grooved supportingpieces to receive the ends of the rods and a device whereby the trowel is carried along the bricksits sections changing their angles so as to spread the mortar.

6. Ina machine for applying plaster to brick, the combination of a movable trowel, a movable brick-supporting frame, and connect- Y ing-gears, whereby the motion of either is communieated to the other.

7. In a machine for vapplying plaster to brick, the combination of a movable trowel, a movable brick-supporting frame, and gears and racks connecting them, so that the motion of either causes them to reciprocate along each other in opposite directions.

8. In a machine for applying plaster to brick, the combination of a brick-supporting frame, a trowel, gear-wheels and racks connecting the trowel-frame, and mortar-receptacles at opposite ends of the frame.

9. In a machine for applying plaster to brick, the combination of a frame with a downwardlycurved bottom to receivel the mortar which falls through the machine.

10. In a4 machine for applying plaster to brick, the combination of a trowel, a bricksupporting frame, a rmortar-receptacle, aimaehine-frame, and legs hinged thereto, adapted' FRANCIS W. PARKER, V(loRA L. CADWALLADER. 

